What is the answer to the first blank?

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

Astudent is working in the lab to determine how time affect impulse the student keeps the force the same in each row but changes impact the time some data is shown witch trial has the greatest a student is working in the lab to determine how time affect impulse the student keeps the fours the same in each row but change is the impact time some data shown witch trial has the greatest impulse